<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>注册</title>
    </head>

    <body>
    <h1>注册用户</h1>
    <form action="http://localhost:8080/servlet/hiServlet" method="post">
        u: <input type="text" name="username"/><br/><br/>
        <input type="submit" value="注册用户"/>
    </form>
    </body>
</html>